Home / 12,130.32-16,740.80-6,825.52

Finding the Fourth Proportional to 12,130.32, 16,740.80 and 6,825.52

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Solution

The fourth proportional to 12,130.32, 16,740.80 and 6,825.52 is: 9,419.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130.32 : 16,740.80 = 6,825.52 : x
  2. Step 2: Convert to fraction form
    12,130.32/16,740.80 = 6,825.52/x
  3. Step 3: Cross multiply
    12,130.32x = 16,740.80 × 6,825.52
  4. Step 4: Simplify right side
    12,130.32x = 114,264,665.22
  5. Step 5: Solve for x
    x = 114,264,665.22/12,130.32
  6. Step 6: Final answer
    x = 9,419.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.